Means for assembling and disassembling electric motors.



F. L. SESSIONS.' MEANS FOR ASSEMBLING ANDDISASSBMBLING ELECTRIC MOTORS.APPLIOATION FILED 00T. 29, 1909.

1,043,633. v Patented Nov. 5, 1912.

2 SHBETS-SHBBT 1.

8 RS@- Mq f COLUMBIA PLANOGRAPH co.. WASHINGTON. D. c.

F. L. SESSIONS. MEANS POR ASSBMBLING AND DISASSEMBLING ELBOTRIG MOTURS.

APPLICATION FILED 00T. 29, 1909.

Patented Nov. 5, 1912.

2 SHEETS-SHEET 2.

. and Disassembling UNITED STATES 4PATENT OFFICE.

FRANK L. SESSIONS, OF COLUMBUS, OHIO, ASSIGNOR TO THE JEFFREY MANUFAC-TURING COMPANYA CORPORATION OF OI-IIO.

MEANS FOR ASSEMBLING AN-D DISASSEMBLING ELECTRIC MOTORS.

Original application filed August 23, 1906, Serial No. 331,781.

Specicaton of Letters Patent.

Patented Nov. 5, 1912. Divided and this application filed October 29,1909. SerialrNo. 525,356.

To all whom 'it may concern.

Be it known that I, FRANK L. SESSIONS, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented certain new and useful Improvements in Means for AssemblingElectric Motors, of

a specification, referwhich the following is to the accompanying encebeing had therein drawing.

This invention relates to devices for lifting the armature of anelectric'motor or the like from the field frame, so that the variousparts may be readily inspectedand repaired.

The object of the invention is to provide devices of this characterespecially adapted for use in connection with motors of the kind shownin my pending application for electric motors, filed August 23rd, 1906,Serial No. 331,781, of which application this present one is a division.

In the accompanying drawings-Figure 1 shows the lifting appliances withthe armature and removable field magnets suspended therefrom. Fig. 2 isa central longitudinal section of the motor, the sling or flexiblelifting band being shown in position, and the position of the armatureand its bear ings when elevated being indicated by dotted lines. Fig. 3is a transverse section of the motor, and Fig. 4t is a similar view withthe upper half of the field frame removed.

In the drawings I have shown the motor with which my improved liftingdevices are especially to be used, in order that said de vices might beproperly understood; but, in the following description, I shall referonly to those features of the motor which will assist in anunderstanding of the present invention. For a detailed description ofthe motor reference may be had to my earlier application abovereferred'to.

Th frame divided on an axial plane into two parts a and b. Within thefield frame is the armature c having its shaft suitably supported inbearings d, e, the latter being clamped between the sections of thefield frame.

The motor is of the i-pole type, each pole being provided withenergizing coils. Two of the poles f and g are mounted as showndiametrically opposite each other upon the upper and lower partsrespectively of the Vcure the yoke to the pole pieces of the head 5 emotor consists essentially ofa field lter to the yoke. Then field frame,being secured to said frame by means of bolt fastenings f, g. The otherpole pieces It, 7c are similar in construction, but, being disposed 90from the pole pieces f and g, they overlie the plane of divisionl of thefield frame and they are secured to both parts of the field frame by thebolt fastenlngs 7i', 7c respectively.

The engaging faces ofthe Apoles 7L, la, and the frame parts are madeplane so that the upper part of the field frame ycan be removed, asindicated in Fig. 4. When this has been done the pole pieces and thearmature are ready to be lifted from the lower part of the eld frame,this being possible by reason of the plane vertical faces of the polepieces which engage with the frame.

Referring now to the lifting appliances proper, 1 is a yoke provided inits middle part with a sleeve 2, through 4which passes athreaded rod 3.This rod is preferably bent at its upper end to form an eye 4;, to whichmay be secured the lifting chain of a crane or the like. The rod 3carries at its lowerend a head 5 having up-turned ends, as shown. Therod 3 is threaded to receive nuts 6, 6, which secure the rod to the yokeand by means of which the rod may be adjusted up `and down relative` tothe yoke. The yoke is formed at itsends with sleeves or eyes 7, 7,*whichl are adapted to receive the upper fastening bolts L, le', so astoA se- 7L and le. 8 is a sling or flexible band adapted to be passedaround the armature o and having apertured fastening devices 9, 9 at itsends designed to be passed over the hooked ends of rod 3. Thedeviceswhich lift the threev motor parts, namely, the pole pieces h, is,andthe armature c are thusconnected so that all three partscan readilybe lifted together. 7 .i

Theoperation of my improved,Y lifting devices will be readily understoodfrom the foregoing description. The upper part of the motor field framehaving been removed, as shown in Fig. 4t, the sling 8 is assed aroundthe armature and the yoke l 1s then lowered into position, so that theends of the sling can be secured to the head 5. The bolts it', 7c arethen passed through the lower ends of the yoke arms, and made fast tothe pole pieces 7b, k, thus securing the latby simply lifting the tionof a rigid yoke part yoke the pole pieces and armature are smoothly andeasily lifted from the lower part of the field frame, so as to entirelyeX- pose the commutator and other parts. By adjusting the rod 3 in theyoke 1, it is possible to lift the armature and pole pieces exactlysimultaneously, so that they are maintained in their proper concentricrelation and any injury due to rubbing of the pole faces against thearmature is avoided. When the necessary inspection and repairs have beencompleted, the armature and pole pieces are lowered into position, andafter detaching the lifting devices the various motor parts can again beassembled and secured in place, as will be readily understood.

1. In a lifting device for dismantling and assembling dynamo-electricmachines having sectional field frames and field magnets removable withthe armature, the combinahaving depending arms, means for connecting oneof said arms rigidly to a field magnet, means for connecting` the otherarm to a second field magnet, and a part adapted to be connected to thearmature, said last named part and rigid yoke part being connected toeach other, whereby the armature and field magnets can be simultaneouslyraised or lowered.

2. In a lifting device for dismantling and assembling dynamo-electricmachines having sectional field frames and field magnets removable withthe armature, the combination of a rigid yoke part, means for connectingone side of the yoke rigidly to a field magnet, means for connecting theopposite side of the yoke rigidly to a second field magnet, and a partadapted to be connected tothe armature of the motor, the last named partand said yoke being connected to each other, whereby the armature andeld magnets can be simultaneously raised and lowered.

3. In a lifting device for dismantling and assembling dynamo-electricmachines having sectional field vframes and field magnets removable withthe armature, the combination of a rigid yoke part, means for securingone side ofsaid yoke part rigidly to one of the field magnets, means forsecuring the other side of the yoke rigidly to a second i' field magnet,a part adapted to be connected to the armature of the motor, and meansfor rigidly to a adjustably connecting the last named part to the yoke,whereby the armature and field magnets can be simultaneously raised andlowered without disturbing their relation to each other.

4. In a lifting device for dismantling and assembling dynamo-electricmachines having sectional field frames and field magnets removable withthe armature, the combination of a rigid yoke part having dependingarms, means for connecting one of the arms field magnet, means forconnecting the other arm rigidly to a second field magnet, and afiexible sling suspended from the yoke in the plane of the arms thereof,said sling being adapted to pass around and sustain the armature,whereby the armature and field magnets can be simultaneously raised andlowered.

5. In a lifting device for dismantling and assembling dynamo-electricmachines having sectional field frames and field magnets removable withthe armature, the combina-- tion of a rigid yoke part having dependingarms, means for connecting one of the a rms rigidly to a field magnet,means for connecting the other arm to a second field magnet, a flexiblesling adapted to pass around he armature, and means for adjnstablyconnecting the sling to the yoke part, whereby the armature and fieldmagnets can be raised and lowered without disturbing their relations toeach other.

6. In a lifting device for dismantling and assembling dynamo-electricmachines having sectional field frames and field magnets removable withthe armature, the combination of a rigid yoke part, means for connectingone side of said part rigidly to a field magnet, means for connectingthe other side of said part to a second field magnet, a part adapted tobe connected to the armature, and a connecting device on the rigid yokepart adapted to connect with a suitable hoisting tackle, the rigid yokepart and the armature engaging part being connected to each other,whereby the armature and field magnets can be simultaneously raised andlowered.

In testimony whereof I afiix my signature, in presence of two witnesses.

FRANK L. SESSIONS.

Witnesses:

E. P. SNIVELY, ALEX. M. READ.

i Copies of Vthis patent may be obtained for ve cents each, byaddressing the Commissioner of Patents,

Washington, D. C.

